The research on the relationship between rural-urban migration urbanization and economic development as well as rural-urban migration urbanization mode plays an important role in the development of one country or one region.

Effects of the social security on rural-urban migration of China:the analysis from the investigation about 444 farmers of ten villages;

The paper establishes a model of rural-urban migration on the basis of the maximization of the net income of labor allocation,and ushers in variables as system,living costs and non-agricultural industries in rural areas.

From the supply of providing for the aged system, rural-urban migration helps to enhance old population s economic guarantee, but it has disadvantages in the living care and spirit comfort.